Resources Contact Us Home
Integrating analog/digital converter

Image Number 16 for United States Patent #6285310.

An analog/digital converter including an amplifier (1) wired as an integrator, a comparator (2) electrically downstream from the integrator, a time counter (6) which continually counts the pulses of a pulse generator (5), a bistable element (4), and additional circuitry. The bistable element (4) drives the input network of the amplifier (1) with at least one switch (3) in such a way that in one of its two positions ("off" condition) a current I.sub.x proportional to the analog measured value is integrated, and in the other position ("on" condition) a constant reference current I.sub.ref with opposite polarity to the current I.sub.x is integrated in addition to current I.sub.x. The switching of the bistable element from the "off" condition to the "on" condition is controlled by the time counter, and the switching from the "on" condition to the "off" condition (switch-off time) is controlled by the output signal of the comparator, which is generally synchronized with the pulses of the pulse generator. The pulses of the pulse generator (5) are summed to a result during the time the bistable element is in its "on" position. The additional circuitry displaces the switch-off time of the bistable element (4) beyond the time resulting from the above synchronization by a number of pulses of the pulse generator (5) determined by an arithmetic unit (31).

  Recently Added Patents
Continuous geospatial tracking system and method
Enabling improvement in cellular network coverage
System and apparatus for control of published content
Recombinant negative strand virus RNA expression systems and vaccines
Implant free extremely thin semiconductor devices
Error detection and recovery tool for logical volume management in a data storage system
  Randomly Featured Patents
Methods to solve alkaline-sulfate scales and related-gases problems
Instruction format for program control type data processing systems
Bottle packages
Wooden modular paneling for interior decoration
Stationery holder with luminous reminder
Slice selective MRI excitation with reduced power deposition using multiple transmit channels
Method for replacing parts of a digitally coded picture, and device for carrying out the method
Electrical terminal intended for mating with a terminal tab
Grass trimmer
Avoiding pitch troubles using acylgerol lipase